Oil-well pump



R. BTHURSTON.

on wm PUMP.

1,318,513 Patented om. 14,1919.

2 SHEETS-SHEET l.

ATTORNEYS ROBERT BLAKELEY THURSTON, OF OIL UENTER, CALIFORNIA.

OIL-WELL PUMP.

Specifica*` on oflLetters Patent.

Patented Oct. 14, 1919.

nAppiieauon filed May e, 1919. seriai No. 295.076.

To H :clio/iz it may concern Be it known that l` lioiaicirr l5. Tuuns'rox, a citizenof the United States, and a resident of )il Center, iii the county of Kern and btate of California, have invented-certain jnew and useful li'nproveiiients in Oil# Well Pumps, ot' `which the following is a specification.

My present invention relates gern-ally to oil well pumps, and more particularly to the apparatus for actuating the plunger rod of oil well pumps, my object being the provision of plunger rod actuating means which will automatically permit of vertical creasing of the plunger ot the p'ump in the plunger casing or working oarrel, and 1n this way avoid cert-ain disadvantages in opei'ation to which the pump and its connections are subject 'at the present time.

It is :i well known fact that in all puinping oil wells there is an inclination for sand to drain from the oil veins into thehcasing or workng barrel of the pump. This sand in the ordinary construction is packed down hard by the plunger, gradually filling the working barrel until either the plunger refuses to move or will not make a. full stroke. This condition requires three men siX or eight hours to pull out the rods and tubing, clean out the hard packed sand and replace the worn parts of the pump. A new well often sands tive or six times during` a iveek,iiial iiig a large expense for labor and time lost from pumping through the disadvantage above. noted.

Inmgarrying out my invention, I provide a device 'which is so constructed and attached that 'when enough sandaccumulates in the bot-tom of ine working barrel to force .the plunger up, the connection actuating the plunger rod, while allowing the plunger to fall downwardly as far as it will within the working barrel, will not force the plunger to the lowestpoint of its original travel, but will permit the plunger to seek a new higher level and will :their -ii'iipart the' same length of stroke `from, each new suc- Iceeding 4higher level thus brought about.

'As a" result. of thisconstruction, when enough sand has accumulated within the working barrel so that the plune'er forced up out of the bariel, t-iie oil' that is in the tubing of the well, will rush working barrel and will 'aslifoutf the-sand, and itisftlien buttlieijvoi.(of a few minutes to' ui'ieoi'iplcand drop the pliingerfback to r-'dpwn through the...

its original lowest level so that the pumping operation may be again started.

The means preferably employed for carrying out the above objects will be better understood from the following description thereof, reference being made to the accompanying drawing in which:

Figure 1 is a side view, more or less diagrammatic, illustrating thecomplete pumping arrangement,

Fig. 2 is a top plan view of the adjustable gripping device, and

Fig. 3 is a longitudinal section through the device shown in Fig. 2.

Referring now to these figures, and particularly to Fig. 1, my invention has to do with an oil well pump in which the plunger appears at 10, working within a barrel l1,

' from the upper end of which the pump eastubular body ing 12 rises, the plunger being connected to a plunger rod 13 extending upwardly through the casing l2 and above the upper end of the casing, vfor engagement by the means utilized for bringing about vertical reciprocatioii of the pump rod.

The means I preferably employ include a walking beam or beam lever 14, fulcruined at a point 15 above the surface, with one end slotted to receive the upper end of the rod 13, and with its opposite end actua-ted to and from any suitable source of power.

My invention also proposes the use of some adjustable gripping device upon the upper portion of the plunger rod 13 above the adjacent end of the beam lever 14 and to this end I may utilize a particular grip ping device as shown in Fig. 3, having a 16 from which project diametrically outstanding arms 17 adapted for engagement bythe respective end'of the beam lever 11 in t-he upward movement of the latter. l `Thebod-y ll'fh'asrthelower portion of its vertical bore (if-conical formythe.

lower smaller end of which is but slightly larger than the plunger rod 13. The upper end of the bore of the body 16 is moreover f closed by a caplS having a central opening through which the plunger rod also passes, and having openings atopposite sides-etats central opening, to receive verticallythere!y through the upper end ofstaples'lpforml I ing handles and projecting upwardly from .theupper ends of a pair of soun-cylindrical 'gripping members 20, whose inner surfaces are provided with gripping teeth 21, and whose outer surtaces are tapered to accord W. 1. TURNER.

sTEAIvI HEATING APPAITATUS.

y i APPLICATION FILED APR. s, I9I6. 1,818,514. lPanwd 061.1411919,v

1 I\. I y1 "uw, if? I 'rIII CnLuMm/I I-LANnGR/wl co., WASHINGTON, I). c. 

